Product details:

Drill as many as 100X more holes than high speed or bi-metal hole sawsBenefitsProduction grade. - Ability to sharpen teeth. - Flats reduce slippage in chuck.ApplicationsCarbon steel, cast iron, stainless steel, aluminum, hard rubber, titanium and formica.FeaturesTeeth are precisely brazed into steel body for superior strength and efficiency. - Engineered for high performance cutting in either a hand held drill or stationary drill press. - Drilling depth: 1" standard - Thin Gauge Hole Cutters TG Series - For materials up to 1/4" thick.